X0508 4 2024-03-15 0 0001819576 Liquidia Corp LQDA 0001854414 Schundler Russell 419 DAVIS DRIVE, SUITE 100 MORRISVILLE NC 27560 0 1 0 0 General Counsel 1 Common Stock 2024-03-15 4 M 0 2344 A 496740 D Common Stock 2024-03-18 4 S 0 715 15.82 D 496025 D Common Stock 2024-03-18 4 S 0 7938 15.82 D 488087 D Common Stock 14500 I By Spouse Restricted Stock Unit 2024-03-15 4 M 0 2344 0 D Common Stock 2344 18750 D Restricted stock units ("RSUs") convert into common stock on a one-for-one basis. On January 16, 2022, the Reporting Person was granted 37,500 RSUs with 25% vesting on February 28, 2023, with the remaining RSUs vesting ratably on a quarterly basis over three years thereafter. Of those RSUs, a total of 18,750 have vested through March 15, 2024. Includes (i) 78,125 unvested RSUs of the 104,167 RSUs granted to the Reporting Person on January 11, 2023, (ii) 110,135 unvested RSUs granted to the Reporting Person on January 11, 2024, none of which have vested as of the date of this Form 4 and (iii) 8,342 shares acquired under the Liquidia Corporation 2020 Employee Stock Purchase Plan. Transaction effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 15, 2023. These shares of common stock were sold to cover taxes associated with the settlement of RSUs that were initially granted to the Reporting Person on January 16, 2022. These shares of common stock were sold to cover taxes associated with the settlement of RSUs that were initially granted to the Reporting Person on January 11, 2023. The reporting person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein. /s/ Russell Schundler 2024-03-19